Gas cock



June 15, 1937. B E MEACHAM ET AL 2,084,210

' GAS COCK Filed NOV. 3, 1956 Mikal J9 1, L93 Z6 D J J@ Z@ j@ (99 y L96@a Patented June 15, 1937I UNITED STATES GAS COCK Benjamin E. Meacham,

Lotter, Parma, Ohio, assignors Cleveland, and William to American` StoveCompany, St. Louis, Mo., a corporation of New Jersey ApplicationNovember 3, 1936, Serial No. 109,018

4 Claims.

This invention pertains to gas cocks and comprises an improvement, incertain respects, upon the gas cock appearing in the copendingapplication of Benjamin E. Meacham, Serial No. 74,384.

5 The present gas cock has been devised for use in connection withcooking ranges and in connection with their operation it has been foundthat it is often highly desirable to provide a device by means of whichclose control of the flow lo of the fuel to the gas burners can beobtained. Although the control of fuel to a gas burner is specificallyabove referred to it is to be readily understood that the present cockis not necessarily limited in use to the control of gas but could beused to control the flow of other fluids or liquids.

A gas cock affording a close fuel control such as does the present cockis particularly desirous for use with closed or solid top cooking rangessuch as are used in hotels, restaurants, hospitals and similar places,due to the fact that such ranges are operated at high temperaturesusually only at meal hours yet throughout practically the entire day andnight too it is desirable to maintain the top of the range warm, and toaccomplish this it is necessary to operate the heating burners with alow flame or fire.

Past experience has proven that where a gas cock of the ordinary andconventional rotary plug type is provided or utilized it is particularlydicult to obtain the close control of the fuel to the burners which isnecessary and desirable and consequently in the present device'there isprovided not only a rotary plug type of gas cock but in combinationtherewith a supplemental valve or cock control in the form of asecondary or supplemental control in addition to the main rotary plugvalve.

From the foregoing it will be therefore ap- 4 parent that one of theprimary objects of the present invention is the provision of a valve orcock by which a close control of the fuel to a burner can be obtained. o

A further object of the invention is the provision of a cock or valvehaving the above referred to attributes which is simple and cheap ofconstruction yet highly efficient in operation.

Another and still further object of the inventionr is the provision of agas cock having the 50 above'referred to and enumerated attributes andwhich is leak-proof and which eliminates use of all forms of packing. Astill further object of the invention is the provision of a fuel controlcock having a novel drive connection between the operating handle andthe main and supplemental fuel control valves of said cock.

Other specific objects, novel features of construction and improvedresults of the invention will appear in more detail in the followingdescription when read in the light of the accompanying drawing.

In the drawing:

Fig. 1 is a vertical sectional view through the improved cock.

Fig. 2 is a vertical sectional view taken at right angles to Fig. l, onthe line 2-2 of said figure. Fig. 3 is a vertical sectional view takenonthe line 3-3 of Fig. 2.

Havingreference now to the drawing which illustrates apreferred-embodiment of the present invention and in which like partsare designated by similar reference numerals throughout the descriptionand the drawing, A designates a valve housing or fitting which isintended to constitute a part of the fuel line from a fuel supply to theburners utilizing the said fuel and as a consequence this member has itsinlet end l suitably threaded as at 2 for connection with a suitablesource of fuel supplyv while its opposite outlet end 3 is suitablythreaded as at 4 for connection with a pipe or manifold for conveyingthe fuel to the burner or burners intended to utilize said fuel.

Intermediate the fuel inlet I and the fuel outlet 3 the fitting. isenlarged to form an open ended tubular portion having itsinnerfacebeveled, as clearly indicated at 5 to rotatably receive a'tapered plug or main valve B the inner reduced end of which is furtherreduced to provide a shaft 6 which extends outwardly beyond the smallend of the tubular part 1 of the fitting.

This shaft 6 has flattened sides and carries a washer or plate 8 havingtherein an opening having flattened sides so that said washer rotateswith the shaft. At its outer end the shaft is threaded and carries amain nut 9 and a lock nut I0 which serve as an abutment for one end of aspring Il which surrounds the shaft while the other end of the springabuts the plate or washer 8 and holds said washer against the end of thetubular portion of the fitting under resilient spring tension. Thus itwill be seen that the washer is a closure for the small or reduced endof the tube-like portionv of the fitting and additionally this washeracts-as a stop tolimit the rotative movement of the main plugfvalve. Toaccomplish this function the plate or disc has lon its peripheral edgean arc-shaped cut-out portion and the shoulders at the ends of saidcut-out portion are adapted to engage the outwardly extending stop I2which forms a part of the tubular portion 1 of the fitting. Theengagement between the washer and the stop is clearly illustrated inFigure 1 of the drawing. This manner of forming a stop is more or lessconventional and is quitel similar to that illustrated and described inthe aforementioned copending Meacham application Serial Number 74,384.'I'his construction affords a means for limiting the movement of themain rotary valve so as to assure that the operator of the device candeflnitely fully open and fully close the main plug valve B.

'I'he plug valve has a transverse opening or bore I3 which throughrotation of the plug can, at will, be made to register with the inletand outlet pipes I and 3 of the fitting. This main plug valve iselongated to extend well out beyondV the open large end of the tubularportion 1 of the flttlng and is hollowv so that in reality it forms atube having an open outer end |4 and inner closed end I5. At its outerend the plug is formed with a pair of circumferential flanges arrangedin spaced relation and constituting oppositely positioned wings or lugsI8 and I1 which extend at right angles to the main body plug. Interiorlythe plug atits open end is provided with achamber I8 and between thischamber and the fuel passageway I3 of ,the plug the interior of the plugis tapered, as clearly appears at I9 while beyond the transverse fuelpassageway ||l the plug is provided with a second chamber 20 whichterminates intheaforementioned bottom I5.

The secondary valve, which we term a butterfly valve, is designated asan entirety by C and is positioned and rotatable within the hollow -mainrotary plug valve B. 'Ihis plug valve comprises a tapered portion 2| ofthe proper length and diameter to enter and freely rotate within thetapered portion ,|9 of the main plug valve. From the tapered cylindricalportion there extends outwardly a reduced shaft portion 22 which isdisposed within the chamber I8 and from this shaft extends a secondshaft 23 which extends outwardly through and beyond the open end of themain plug valve. The shaft 23 is an angular shaft and has one of'itscorners out away as appears at 24. From the other and reduced end of thetapered cylindrical plug-like portion of the butterfly valve thereextends a disc or shutter 25 having therein a small shutter is oi' asize to extend from one side to the other of the passageway I3 o'f themain plug valve. At its inner-most end or side this shutter terminatesin a circular disc or plug-21 of the proper diameter to enter and rotatewithin the innermost chamber 20 of the main plug valve.

Both the primary and secondary valve are operated by a hand knob orwheel D which has a hub portion 21 terminating in a plate or disc 28.'I'he plate and hub are provided centrally with an opening 29 having thesame cross sectional configuration as that of the butterfly valve shaft23 so that said shaft can enter the opening and provide a drivingconnection between the hand wheel and the butterfly valve. Due to theflattened corner of the shaft and a corresponding flattened wall in theopening 29 proper engagement of the shaft with the operating handle isassured. At its under side the disc is provided with oppositely disposedand outwardly extending wings or lugs 38 and 3| and when the operatinghandle is in proper operating position these lugs extend passageway 28.This downwardly into the spaces between the lugs or wings I6 and I1carried by the outer open end of the main plug valve. Inasmuch as thespace between the wings I 8 and I 1 is larger than the combined size ofthe lugs 30 and 3| it willbe understood that when the handle is rotatedin a clockwise direction, see Fig. 3 of the drawing, considerablerotation will take place beforethere is driving connection made betweenthe lugs of the operating handle and the lugs of the main plug valve. Y

A U-shaped collar or fitting E together with a nut 32 are utilized tosecure the operating Wheel in proper operating position. It will be seenthat the bottom 33 of this fitting engages the under sides ofthe plugvalve wings I8 and I1 while its other lleg 34 extends outwardly at rightangles and is internally threaded to receive the threaded peripheraledge 28 of the wheel disc as clearly appears at 35. It is understood ofcourse that the U-shaped iltting E is of a proper diameter to receivethe disc 28 and when said disc has been properly positioned it issecured or locked by the aforementioned nut 32.

The coil spring I I assures that the tapered main plug valve B ismaintained within its tapered seat under sufficient resilient tension toprevent the leakage of fuel and a coil spring 38 is positioned withinthe chamber I8 and serves to exert resilient pressure upon the plugportion 2| of the butterfly valve C to assure that this tapered plugportion maintains a leakage-proof connection or engagement with itstapered seat.

Lubrication for the main rotary plug valve is obtained by providing thetapered portion of said valve with grease grooves 31 and the taperedplug portion of the butterfly valve is similarly provided with grease orlubricant-receiving grooves 38.

rotate the main plug valve to a position where l its transverse port I3is in alignment with the inlets and outlets I and 3 of the fitting. Whenthe main plug valve is open the secondary or butterfly valve is closedas clearly appears in Fig. 1 of the drawing, from which it will be seenthat the shutter or disc 25 of this valve is transverse the bore I3 ofthe main plug valve. When the parts are in this position a very limitedamount of fuel reaches the outlet 3 through the small orifice 28 in thebutterfly disc. Rotation of'the operating wheel in the reverse directionhowever will permit any desired positioning or adjustment of thebutterfly disc 2l in respect to the bore I3 through the main plug valveand by this manipulation it will be clearly understood that a closecontrol of the fuel passing to the outlet 3 can be obtained. f

The drive connection between the operating wheel D and the butterflyvalve is positive at all times through the squared shaft 23 but it willbe readily understood from the foregoing description that there is alost-motion drive connection between the wings 30 and 3| oi' theoperating handle disc and the wings I8 and I1 of' the main plug1 valv'ewith the result that when the main plug valve has been rotated to afully open posi-- reverse direction for adjusting the shutter of thebuttery valve without in any way affecting the previously adjustedposition of the main plug valve. Continuing the rotation however of theoperating handle D in a reverse direction will bring the wings of theoperating handle into engagement with the wings of the main rotary plugvalve to permit that valve to be moved to a closed position when it isno longer desired to operate the burners.

From the foregoing description and from an examination of the drawing itwill be seen that the present cock is of a much more simplifiedconstruction than that appearing in the Meacham copending applicationheretofore referred to, and that as a consequence it is cheaper tomanufacture and the possibility of inaccurate operation or trouble ormaintenance is materially. reduced by reason of this simpliedconstruction.

We claim:

1. An improved cock, comprising a housing having a passagewaytherethrough, an open ended chamber in said housing intermediate thelength of said housing passageway and having its inner 25 wallstaperedto provide a conical valve seat, a

hollow tapered plug valve in said seat and provided with a passagewayadapted for communication with the housing passageway at each side ofsaid chamber, said plug valve interiorly pro- 30 vided with a conicalshaped chamber, a secondary valve having a conical shaped portion seatedwithin the conical chamber of the main valve and provided with a shutteradapted to open and close the passageway of the main valve, means 35 tohold said `main valve upon its conical seat under resilient tension,means to hold the conical portion of the secondary valve within itsconical seat under resilient tension, and operating means to rotate saidmain plug valve and 40 said secondary valve in respect to the housing,

for the purpose described. 1

2. An improved cock, comprising a housing having a passagewaytherethrough, an open ended chamber in said housing intermediate the l45 length of said housing passageway and having its inner walls taperedto provide. a conical vvalve seat, a hollow tapered plug valve in saidseat and provided with a passageway adapted for communication with thehousing passageway at each 50 side of said chamber, said plug valveinteriorly provided with a conical shaped chamber, a secits conical seatunder resilient ondary valve having a conical shaped portion seatedwithin the conical chamber of the main valve and provided with a shutteradapted to open and close the passageway of the main valve, means to-hold said main valve upon its conical seat under resilient tension,means to hold the conical portion of the secondary valve within tension,and a common operating means to rotate said main plug valve and saidsecondary' valve in respect to the housing and in respect to oneanother, for

the purpose described.

3.,An improved cock, comprising a housing having a passagewaytherethrough and an open ended chamber intermediate the length of saidpassageway provided with taperedwalls to form a conical valve seat, anelongated hollow primary valve having a tapered plug portion engagingthe conical seat oi said chamber and a passageway adapted forcommunication with the housing passageway at each side of said chamber,said valve at its -ends provided with a pair of outwardly extendingspaced apart wings and interiorly provided with a conical shapedchamber, a secondary valve within said primary valve and having aconical shaped portion seated within the conical chamber of the primaryvalve and provided with a shutter adapted to open and close thepassageway of the primary valve, means to hold said main valve upon itsconical s'eat under resilient tension and to hold the conicall portionof the secondary valve within its conical seat under resilient tension,an operating handle .provided with wings extending into the spacesbetween the wings of said primary valve, said operating handle furtherdrive connection with said secondary valve, and said operating handleconstituting a common means for rotating said main plug valve and saidsecondary valve in respect to the housing and the secondary valve inrespect to the primary valve, for the purpose described.

4. An improved cock constructed as defined in claim 3, wherein the driveconnection between the operating handle and the secondary valve is suchas to guarantee that the position of the opprovided with provided withpositive erating handle in respect to the secondary valve is always thesame.

BENJAMIN 15:. MEACHAM. WILLIAM Lo'rrER.

